I did 5 sketches this morning before the clouds get in. Look at this monster prom.... The first and the 5th sketch represent the same prom at 1:05h interval to see the modification. Because of it's complexity, that take longer to draw it and as it was changing quickly, it was different before I finsih it. So I had to be quick myself.

Here a new sketch taken end of the day. I got a bit frustrated with this one. This prom is so complex and hard to reproduce that when I'm finish with it and comparing, nothing is similar !!! All change within the 10 minutes I take to do the sketch. It's the hardest I got to date. I can't tell you this sketch is an exact reproduction.